I’d love to speak about a subject close to my heart – actions and filters. I’ve encountered many situations where when someone wanted to expand on or change WordPress’s functionality, they made changes to the core code. This is not just bad for future-proofing your website, it is also unnecessary. WordPress is rich in hooks laid throughout the code base for anyone to use. I’d be happy to speak about the purposes of actions and filters, and about the differences between them. I can also share my technique of using ‘grep’ on plugins source code to quickly find their hooks and make their behavior suit my needs.